Add or subtract as indicated. Write the answer in simplest form.- 
+ 
+ 
A. 
B. - 
C. 
D. - 
Answer: D
Mathematics
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Solve the problem.In a certain memory experiment, subject A is able to memorize words at a rate given by 
In the same memory experiment, subject B is able to memorize at the rate given by 
How many more words does subject B memorize from t = 0 to t = 19 (during the first 19 minutes)?
A. 16 B. 29 C. -7 D. -21
Mathematics
List the numbers in increasing order from least to greatest.-17, 6, 0, -40
A. 6, 0, -17, -40 B. -40, -17, 0, 6 C. 0, -40, -17, 6 D. -17, -40, 0, 6
Mathematics
Graph the function.f(x) = x 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.Use the line graph to determine how many more hours were needed to prepare for Test 4 than for Test 2.
A. 4 B. 3 C. 2 D. 1
Mathematics